Cable drive for shovels



Feb. 9 1926. 7 1,572,177

.. R. A. BECKWITH CABLE DRIVE FOR SHOVELS Filed June 20, 1924 2 Sheets-Sheet 1 3110c mroz za' ndflzwmwo Feb. 9 1926. 1,572,177

R. A. BECKWITH CABLE DRIVE FOR SHOVELS 7 Filed June 20, 1924 2 Sheets-Sheet 2 Patented Feb. 9, 1926.

, UNITED STATES RAYMOND A. BECKWITH, F MILWAUKEE, WISCONSIN, ASSIGNOR 'IO KOEHRING COM- PATENT OFFICE.

PANY, OF MILWAUKEE, WISCONSIN, A CORPORATION.

CABLE DRIVE FOB SHOVELS.

I Application filed June 20, 1924. Serial No. 721,277.

To all whom it may concern:

Be it known that I, RAYMOND A. BECK- wrrH, a citizen of the United States, resid-. mg at Milwaukee, in the county -of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Cable Drives for Shovels, of which the following is a specification.

The present invention, the typical embodiments of which are specifically set forth hereinafter, comprises certain novel drum operating means particularly designed for the actuation of cable crowding and rackingn mechanism having power shovels. The invention has for its primary object the simplification of the drum mechanism in regard to the means for actuating the same reversely, the operation of the drum in one direction being effected at a relatively low speed as. for crowding out action of the shovel dipper, and in an opposite direction at a higher speed for effectively racking-in the shoveldipper, the movement of the dipper being faster when racking-in than when crowding-out the same.

The invention in the embodiments hereinafter set forth comprises simple mechanism which operates through the action of separate clutches to transmit motion from a prime mover to a cable drum to operate the latter in opposite directions as above referred to.

In the accompanying drawings:

Figure l is a sectional view of drum apparatus embodying the invention according to a referred form.

igures 2- and 3 are vertical transverse sectiona'l Views taken about on the line 22 and 33 respectively of Figure 1.

Figure 4 is a view similar to Figure 1 showing a modified form of the invention.

Figure 5 is a sectional view on the line 55 of Figure 4.

Fi ure 6 is a diagrammatic view showing a litt c more clearly how the operating drum shaft is connected to the shipper shaft carried by the dipper of the shovel, and the method of training the cable about the drums of said shafts and suitable sheaves intermediate of them.

Taking up first the construction of my invention as shown in Figures 1. to 3 1nclusive, I designate a main 0 crating shaft at 1, the same being adaptc to be drlven by a large gear 2 or any suitable means, the gear being keyed to the shaft and driven by a suitable power plant as for instance, an explosive engine or the like. On the shaft 1 is a cable operating drum 3 which is loosely supported by the shaft and which constitutes a crowding-out and rackin -in drum when used in con unction with the ipper of a shovel crane. The drum 3 is adapted to be connected. to rotate with the shaft 1 at the same speed as the shaft by means of a clutch band 4 adapted to be contracted and expanded in the well known manner in relation to a clutch flange or rim 5 on the drum 3 at one end of the latter. The band 4 may be operated by any conventional means as shown at 6, 7 and 8, said parts being a rocker shaft, connecting rod or link and actuating sleeve, respectively. When the drum 3 is connected with the shaft 1 by the means just described including the clutch band 4, the drum will be opcrated at its highest speed suitable for racking-in purposes in the operation of a power shovel.

The end of the drum 3 opposite that having the rim or flange 5 is equipped wit-h a gear 9 securely fastened to the drum or otherwise made rigid therewith. Meshing with the gear 9 is a pinion 10 keyed to a shaft 11 which is a small shaft parallel with the shaft 1 and suitably journaled in a supporting standard 12. The shaft 11 also carries a second pinion 13 and the pinion 13 meshes with an internal gear 14 which is loosely mounted upon the shaft 1 and proided intermediate its gear teeth and its axis with a laterally projecting clutch flange 15. The clutch flange 15 has 'the clutch .disks 16 cooperating with clutch means 17 keyed to the shaft 1 and involving a suitable operating clutch sleeve 18.

' lVith the foregoing construction in mind it is evident that when the clutch means 4 is free from the drum, the drum 3 may be driven a direction opposite to that in which it is driven direct by the said clutch means 4, by operation of the clutch sleeve 18. The sleeve 18 maybe shifted by suitable lever and yoke in the well known manner. When the internal gear 14 is operatively connected to the shaft 1 by theclutch means 17 it will cause rotation of the pinions 13 and 10 and through them effect operation of the I of the drum when driven by th clutch 4.

The lower speed is that which is used for the crowding-out operation of the shovel dipper.

In the construction of my invention as shown in Figures 4 and 5 the operating or power shaft is designated 20, the cable operating drum 21. the operating gear 22 and the clutch means between the gear 22 and the shaft 20 is designated 23. This arrangement is quite the same as previously described. But in this'construction I mount on the left hand end of the drum 21 an internal gear 24. I may secure it detachably to the drum or it can be otherwise rigid therewith, this being immaterial. The gear 24 has a pin on 25 meshing therewith and also meshing with 'a gear '26 which is loosely mounted on the shaft 20 and is adapted to be clutched to the shaft through clutch means generally designated at 27 and operable by the clutch shifting sleeve 28. The pinion 25 is carried by a shaft 29 mounted on a standard 30 and the pinion rotates loosely on the shaft 29. \Vith this arrangement it is evident that the higher speed action of the drum 21 is obtained by clutching the same to the shaft 20 by the clutch means 23. The lower speed of the drum 21 in a reverse direction is obtained by driving the same when the clutch means 23 is free therefrom, through the action of the clutch means 27. The clutch means 27 involves a sleeve 27 keyed to the shaft 20 and when the clutch means 27 is effective the sleeve 27 causes a turning of the gear 26, rotation of the gear 25 as a reversing gear, and operation of the gear 24 to turn the drum 21 in a reverse manner to that in which it .is operated by the clutch means 23.

Figure 6 illustrates a diagrammatic view showing the drum shaft which is equivalent to either the shaft 20 of Figure 4 or the shaft 1 of Figure 1. The drum of said shaft is equivalent to either the drum 3 or the drum 21 and is connected to the shipper shaft 30 by a cable 31 which wraps about the main operating drum in opposite directions and also wraps about the drum 32 on the shipper shaft 30 in opposite directions.

The cable 31 is trained around guiding sheaves 33 and 34 in a manner clear from the illustration of Figure 6. The main, drum shaft is, of course, carried by the body of the crane o'r shovel and the shipper shaft 30 with its drum 32 is carried by the boom which supports the dipper operated by the shipper shaft and drum.

Having thus described my invention what In view of the gear ratios of the I claim as new and desire to secur e' by Letters Patent, is:

1. In drum operatingmechanism of the class described, in combination, a main ope'r.- atmg shaft, a drum loose thereon, clutch means for directly connecting said drum to the shaft, the drum being equipped with an internal gear, a pinion meshing with said internal gear, driving means on the shaft for actuating said pinion, and other clutch means to operatively connect the last mentioned driving means with the shaft.

2. In drum operating mechanism of the class described. in combination, a main operating shaft, a'drum loosethereon, clutch means for directly connecting said drum to the shaft, the drum being equipped with an internal gear, a pinion meshing with said internal gear, driving means on the shaft for actuating said pinion, and other clutch means to operatively connect the last mentioned driving means with the shaft, the said separate clutch means being located at opposite ends of the drum.

In drum operating mechanism of the class described, in combination, a main operating shaft, a drum loose thereon, clutch means for directly connecting said drum'to' the shaft,the drum being equipped with an internal gear, a pinion meshing with said internal gear. driving means on the shaft for actuating said pinion, and other clutch means to operatively connect the last mentioned driving means with the shaft, the said driving means comprising a sleevekeyed to the shaft, and its cooperating clutch means being adapted to connect said sleeve operatively to the said pinion by which the internal gear is operated.

4. In reversing drum mechanism substantially as described, in combination, an operating shaft, a drum loosely mounted thereon, clutch means intermediate one end of the drum and the shaft to directly connect the said parts for driving the drum at relatively high speed, the opposite end of the drum b eing equipped with an internal gear, a shaft parallel to the main operating shaft, a pinion mounted on said shaft and meshing with said internal gear, and clutch means for c0nnecting the main operating shaft with said said parts for driving the drum at-relatively' high speed, the opposite end of the drum being equipped with an internal gear, a shaft parallel to the main operating shaft, a pinion mounted on said shaft and meshing with said internal gear andclutch means for conto the drum through said pinion acting as a reversing gear, the clutch means compris- .mg a sleeve keyed to the main operating shaft, and a gear mounted loosely on the main operating shaft and engaging said pinion, said gear being adapted to be clutched to the main operating shaft through cooporation with said sleeve.

6. In reversing drum mechanism substantially as described, in combination, an opcrating shaft, a drum loosely mounted thereon, clutch means intermediate one end of the drum and the shaft to directly connect the said parts for driving the drum at relatively high'speed, the opposite end of the drum being equipped with an external gear, a shaft parallelto the main operating shaft, a pinion mounted on said shaft and meshing with said external gear and clutch means for connecting the main operating shaft with said pinion for driving the pinion and transmitting motion from the main operating shaft to the drum through said pinion acting as a reversing gear,v said clutch I means comprising a sleeve mounted on the main operating shaft, a gear loosely mounted on said main operating shaft adjacent to said sleeve and adapted to be clutched to the latter, said last named gear hav ng nternal teeth, and a second pinion on said p1n1on shaft meshing with the said internal teeth for transmitting motion to the first mentioned pinion and to the gear carried by the drum.

7. In drum operating mechanism of the class described, in combination, a main operating shaft, a drum loose thereon, clutch means for directly connecting said drum to the shaft, the drum being equipped with a gear, a pinion meshing with said gear, driving means on the shaft for actuatlng said pinion in a direction to turn the drum reversely to the movement thereof when the first clutch means is active, and otherclutch means to ope-ratively connect the last mentioned driving means with the'shaft.

.8. In reversingdrum mechanism substan tially as described, in combination, an oper atlng shaft, a drum loosely mounted thereon, clutch means intermediate one end of the .drum and the shaft to directly connect the said parts for driving the drum at relatively high speed, the opposite end of the drum being equipped with a gear, a shaft parallel to the main operating shaft, a pinion mounted on said shaft and meshing with said gear, and clutch means for connecting the main operating shaft with said pinion for driving the pinion and transmitting motion from the main operating shaft to the drum through said pinion acting as a reversing gear, a driving gear adjacent to said last named clutch means, and a second gear on the said pinion shaft meshing with the last gear for transmitting motion to the first pinion and to the gear carried by the drum in order to turn the latter in a direction opposite to its high speed direction of movement.

9. In reversing drum mechanism substantially as described, in combination, an op erating shaft, a drum loosely mounted thereon, clutch means intermediate one end of the drum and the shaft to directly connect Y the said parts for driving the drum at rela-. tively high speed, the opposite end of the drum being equipped wlth a gear, a shaft parallel to the main operating shaft, a pinion mounted on said shaft and meshing with said gear, and clutch means for connecting the main operating shaft with said pinion for driving the pinion and transmitting motion from the main operating shaft to the drum through said pinion acting as a reversing gear.

In testimony whereof I affix my signature.

RAYMOND A. BECKWITI-I. 

